Answer: wikipedia

AnswerCrossword Clue
WIKIPEDIAExpanding on-line reference
WIKIPEDIAReference from the Hawaiian and Greek for "quick education"
WIKIPEDIAReference site founded by Jimmy Wales
WIKIPEDIAOnline reference source
WIKIPEDIAWeb site founded by Jimmy Wales
WIKIPEDIAPopular reference work
WIKIPEDIAIts symbol is a globe composed of jigsaw puzzle pieces
WIKIPEDIAPopular online reference
WIKIPEDIAResource with content in 300+ languages
WIKIPEDIAMany teachers disallow it in footnotes